South China Sea

Your first object is to find Irish. Head down the hallway towards the men working near the red light at the very end. As you get closer, you’ll head the Dog Tag chime. The tag will be in the barracks room on the right side just before you reach the two men working. Look for the knife stuck to the head of the top bunk on the right. It’s the Carcharodon Tag.

Head out and left towards the workers again and go left past them. At the end is a door, open this one and down the catwalk to the next door on the right. Workers and bars will block you from using other paths. Go down this hallway until you reach a swung open door where soldiers are being briefed, ignore them ignoring you while you pass thorough to the mess hall. Head for the other end and you’ll meet up with Pac. Follow him until he stops to wait for you to open the door.

Irish will meet you and take you to Garrison upon your entry. Garrison will order your crew, along with Kovic, to board the damaged Titan. You’ll have to take the boat over. When you gain control over this boat, head forward in the direction your waypoint is guiding you. You’ll have to make a loop around the stern of the ship in order to find a hull breach. If you’re too close, you’ll need to back up and gain some steam to make it in.

When Kovic notes that you need to find hatch G-46, follow him instead into the room where he stops. On the stacks of crates to his right is a P90. Grab it to add it to your collection. Head out and down the hall until you see a slightly open set of double round doors. Open it to reveal the flooded hatch G-46. Dive in as Kovic orders.

This is a very linear path. You’ll get through it easiest by sticking with your squad. You’ll never run out of air while you’re down here. When you reach the final room underwater, look across from the entrance, there is another door (glowing green) with a pillar next to it. On this pillar is the Lord of Waves Dog Tag.

You're going to have to leave the soldiers under the floor to die. There isn’t anything you can do for them. Clear out the enemies in the control room. Head into the next room where you will find the intel in which you came from. Exit through the next door. This will take you to the topside of the ship. Stick to the left side where you see a hole in the deck. Drop down and make your way down the hallway. Make a left and you’ll see a U-100 MK5 leaning up against the wall.

Fight your way to the edge of the deck. Irish will be standing above a boat. Jump off into the water near his location, he will shortly follow. Take control of the boat and its weapon as you will need to fight off enemy boats on your way back to the Valkyrie. Destroy as many boats as possible, it’ll rack up points to go gold.

Clear out the inside and make your way back toawrd Garrison. You will come to the side deck where Chinese helicopters will open fire. Head into the next room where you can equip RPG's and Stingers to take down the helicopters. Make your way into a bay and clear out the enemies. The SPAS-12 is in the Osprey sitting up towards the front of the bay. Walk in the back of it and check the seats on your left. Head upstairs and watch as Hannah kills a Chinese soldier with her hands and feet.

With Hannah in the group, head up the ramp and go outside to join into an existing firefight. If you go right and head toward the wrecked helicopter in flames, you will be able to collect the 3rd Dog Tag in the passengar co-pilot seat which is Agent Kovic's Dog Tag. Continue fighitng until you and Kovic have to clear a ladder blocked off.

Helicopters will come in and prevent you from climbing up and shoot down Kovic in the process. Use the gadget crate to re-stock on rockets and use the Stinger to shoot down the helicopters as they are dropping in soldier in front of and behind you. After you defeat the helicopters and soldiers, you will get the ship recorder from Kovic as he says his last words. Head up the ladder and go to the open hatch. Open the double doors and clear out the two enemies and rescue Garrison.